The more math you do, the more your mind sharpens, and helps you to become a dr. House who always found the fourth positive standard deviation solutions to a medical problem. I only watched a few episodes but those few were expreme cases.
I don't use math everyday as a surgeon. Math was an essential part of the pre-med requirements and was necessary to do well in chemistry, calculus, and physics. However, I don't use any of those skills on a daily basis in my surgical practice.